As I understand it, women in Medieval Europe were thought of as the more problematic sex when it came to sexual sins and there was intense pressure on them not to seduce and corrupt men. Today the stereotype is that men are the ones obsessed with sex, and there are a lot of notions attached to relationships that emphasise that. Tropes like women not keeping up with their partners sexual appetite or withholding sex, and the man generally being the 'getter' of sex and the woman being the 'giver.'
Would these notions have been reverses in the middle ages? Were women seen as the proactive party, trying to constantly get laid, and men being the ones constantly being propositioned?
No. Latin medieval culture could, and did, spin a fancy tale of the devil seducing Eve seducing Adam, and the humoral composition of women making them "leaky" and "open" to demonic influence. They made up theological and biological backing for this teaching.
Popular comic literature came down equally hard on both sexes, each in their turn. Canon lawyers ruled that husbands and wives owed each other sex on demand (within Church limits, of course)
But when it came down to actual, on the ground practice: women might well be accused of being sluts, sure. In one of the texts I work with, widow Katharina Tucher has a vision of Christ calling her, essentially, a ho. Men, on the other hand? Could be rapists. Of course, the standards for conviction were ridiculously and hatefully high. This does not change that medieval people understood the force to come from men in cases that they did see as rape.
Thomas Aquinas wrote that prostitution was sinful but women prostitutes might well be tolerated, because men can't control themselves and otherwise would corrupt good women. His words can't be compartmentalized off as "normative," either. Legal brothels in late medieval cities hosted women prostitutes, not men.
The medieval stereotype of the lusty women was a convenient veneer for and form of for misogyny. The late 20th-century figure of the "player" is aspirational.
